Electrical water-heater



R. J. PATTERSON.

ELECTRICAL WATER HEATER.

APPLICATION FILED AUG. 20. 1919.

R. J. PATTERSON.

ELECTRICAL WATER HEATER.

APPLICATION FILED AUG.20. 19x9.

15,329,204. Patented J an. 27, 1920.

3 SHEETS-SHEET 2.

- Qvwewtoz fiaaiu/Paisrsom R. I. PATTERSON.

ELECTRICAL WATER HEATER.

APPLICATION FILED AUG.20. 1915 1,329,204.

Patented Jan. 7,1920.

3 SHEETS-SHEET 3.

MOW Q43 RALPH J'. PATTERSON, OF BERLIN NEW HAMPSHIRE.

ELECTRICAL WATER-HEATER.

Specification of Letters Patent.

Patented Jan. 27, 1920.

Application filed August 20, 1919. Serial No. 318,793.

To all whom it may concern:

Be it known that I, RALPH J. PATTERSON, a citizen of the United States, residing at Berlin, in the county of Coos and State of New Hampshire, have invented certain new and useful Improvements in Electrical Water-Heaters, of which the following is a specification.

This invention relates to new and useful improvements in water heaters and more particularly to that type of heater in which the heating medium consists of a resistance or heating coil.

An important object of the invention is to provide means whereby the heating coils of the heater may be made readily accessible and removable.

A further object of the invention is to provide a heating unit which may be used either within the boiler or merely placed in the pipe line adjacent thereto.

A further object of the invention is to provide such a heater, which is cheap to manufacture, and the parts of which are readily accessible for changes in event of their being destroyed through long usage.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same,

Figure l is a side elevation of a boiler illustrating one use of my heater,

Fig. 2 is a sectional view taken through the boiler, showing a slightly modified form of heater adapted for use within the boiler.

Fig. 3 is a vertical section taken through the heater, the coils being shown in elevation,

Fig. 4 is a section on line 4-4 of Fig. 3, and,

Fig. 5 is a section on line 55 of Fig. 3.

Referring now more particularly to the drawings, the numeral 10 designates a boiler of a construction usually applied to hot water systems of the general or household type. The numeral 11 designates the cold water inlet pipe and the numeral 12, the hot water outlet pipe.

In the form shown in Fig. 1, my heater is shown as being connected between the drain pipe 13 of the boiler and a branch pipe 15,

connected with the hot Water outlet pipe 12,

the heater being designated as a whole by the numeral 14.

The heatercomprises the tubular casting 16, having a central opening 16 provided at its lower end with screw-threads adapted to receive the cold water inlet pipe 11 or a branch pipe from the boiler drain pipe 13. At its upper end, the tubular casting is pro vided with a horizontal flange 17, havin an upstanding rim 18. The rim 18 is provided with interior screw-threads 19 for a purpose hereinafter to appear. Formed in the horizontal flange 17 are openings 20, adapted to receive casings 21, the casings 21 being rolled or beaded into a groove 22, formed in the sides of the openings 20 of the flange 17 to form a securing means to obtain a watertight joint. These casings are closed at their upper ends and are joined together by a bafiie plate 23, secured to these ends. Mounted within the tubular casings 21 are coils 24, each coil comprising an outer insulation covering 25, within which is arranged a resistance 26 wound about a core 27. The coils are connected at their lower ends by means of connectors 28, mounted upon the binding posts 29 of the coils.

Mounted about the tubular casting 16 is a washer 30, having a cut-out portion 31, this washer being held in position against the under side of the horizontal flange 17 by a retaining ring or clip 32, which may be formed of spring metal or the like. This ring is seated in a suitable groove formed in the outer face of the tubular casting 16. By referring to Fig. 5, it will be clearly seen that by shifting this washer, the various coils may be inserted in the casings 21 and when the coils are all in place, by placing the washer in the position shown in the above mentioned figure, they are securely held in position.

A bottom cover plate 33 is provided, having a central opening 34, adapted to receive the tubular casting 16. The cover plate 33 is provided with an opening 35, through which the lead-in wire may be inserted for attachment to the coils 24. The cover plate is held in position by means of spring clips 36, bearing on their free ends, pins 27, which extend through suitable openings formed in the plate and engaged in openings 38, formed in the outer side of the horizontal flange 17. It will readily be seen that the cover plate 33 is readily removable to allow access to the coils 24, and that these coils may be readily removed by simply shifting the washer 30.

A hood 39 is provided to cover the coil casings 21, and bafiie plate 23,'this hood being provided adjacent its lower end with externalscrew-threads adapted to engage the external screw-threads of the upstand ing rim 18. T 0 form a water-tight joint, a gasket 40 may be placed intermediate the lower end of the hood and the horizontal flange 17 and the hood screwed down upon the gasket.

At its upper end, the hood is provided with a flanged outlet fitting i2, riveted or otherwisesecured thereto, as at 41, this outlet fitting being provided with screw-threads to receive the hot water outlet pipe 15.

In the form shown in Fig. 2, it becomes necessary to provide the. upstanding flange 18 with screw-threads 43 upon its outer surface. The bottom of the boiler id is pr0 vided with corresponding threads to receive the threads 43 and the heater is screwed tight into position in the bottom of. the boiler or may be ga'sketed or a tight joint formed in any desired manner. In this construction, the cold water admitted to the boiler passes through the heater. As water 'said tubular casting and rotatable thereon is only admitted to the heater when a faucet isopened or water is being drawn in any manner from the hot water outlet pipe 12, in order to insure perfect circulation, the hood 39 is provided adjacent its lower edge with openings 45, through which the cold water may enter the heater, establishing a circulation through the pipe 15, as is well r known. I

It is tobe understood that the forms of my invention herewith shown and described are to be taken as preferred examples of the same, and that various changes in the shape, size, and arrangement of parts may be resorted to without departing from the spirit of my invention, or the scope of the subjoined claims.

Having thus described my invention, I claim:

1. In awater heater, a tubular casting provided with a flange, an opening formed in said flange, a heating coil extending into said opening, and means surrounding said tubular casting allowing insertion of said coil in said opening, when in one position and preventing removal of the coil when shifted.

2. In a water heater, a tubular casting provided with a flan e, an opening formed in said flange, a casing secured within'said opening, a heating COll adapted for insertion in said casing, and means surrounding allowing; insertion] of said coil in said casing when in oneposition and preventlng removal of the 0.011. When shifted.

3. In a water heater, a tubularcasting provided with a flange, an opening formed in said flange, a tubular casing secured Within said opening, a heating unit adapted for insertion in said casing, a washer p OVided with a cut-out portion surrounding said tubular casting, and means for retaining said washer in position against the under side of said flange.

4.111 a water heater, a tubular casting provided with a flange, aplurality of. open ings formed in said flange, tubular casings secured in said openings, heating units adapted forinsertion in said casings, a washer mounted about said tubular casting and rotatable thereon, and means for retaining said washer in position against the under surface of said flange, said washer being provided with a cut-out portion, adapted to co-act with the openings formed in said flange to allow of insertion or removal of said heating units.

5. Ina water heater, a tubular casting provided with a flange, an opening formed in said flange, a tubular casing secured within said opening, a heating unit adapted for insertion in. said casing, a washer provided with a cut-out portion surrounding said tubular casting, means for retaining said washer in position against the under side of said flange, and a removable cover surrounding said tubular casting and provided with means for releasably securing the same to said flange.

6. In a water heater, a, tubular casting provided with a flange, having an upstanding rim provided with internal screwthreads, a plurality of openings formed in said flange, tubular casings secured in said openings, heating units adapted for inser- '105 tion in said casings, means for removably securing said heating units within said casings, and a hood provided. with an outlet opening, said hood being provided upon its 7 outer face with screw-threads adapted to engage the screw-threads formed in said rim. i

'7. In a water heater, a tubular, casting provided with a flange having an upstanding rim provided with internal and external screw-threads, aplurality of openings formed in said flange, tubular casings secured in said openings, heating units adapted for insertion in said casings, means for removably securing said heating units within said casings, and a hood provided with an outlet opening adapted to cover said cas- 'ings and said flange, said hood being prosaid flange, tubular casings secured in said openings, he, ting units adapted for insertion in said casings, means for removably securing said vheating units within said casings, a baflle plate secured to the upper end of said casings, and a hood provided with an outlet opening, said hood being provided upon its outer face with screw-threads adapted to engage the screw-threads formed in said rim.

9. In a water heater, a tubular casting provided With a flange having an upstanding rim, having internal and external screwthreads, a plurality of openings formed in said flange, tubular casings having their upper ends closed secured in said openings,

heating units adapted for insertion in said casings, means for removably securing said heating units within said casings, a battle plate secured to the upper ends of said casings, a hood provided with external screwthreads adapted to engage the screw-threads of said rini, an outlet opening for said hood, and a plurality of openings formed in said hood adjacent the lower end thereof.

In testimony whereof I aflix my'signature in presence of two witnesses.

RALPH J. PATTERSON.

\Vitnesses:

GEO. F. RICH, FANNIE FINKLE. 

